Mail.app crashing since Catalina

Hello guys !

Since I updated to Catalina I have had problems with the mail app.

First, it wasn't displaying the body of my mails, I could see the subject and the first line preview on the left, but nothing was displaying on the right. So I tried some troubleshooting steps, like deleting preferences and Enveloppe files. And now the app won't even open. Here is the crash report I get.

If anyone got any idea how to fix this it would be very helpful.